#include <cstdio>
#include <cstring>

const int len = 32;
const int maxn = 1024 + 10;
char s[maxn];
int buf[len][len], cnt;

void draw(const char* s, int& p, int r, int c, int w)
{
	char ch = s[p++];

	if(ch == 'p'){
		draw(s, p, r,       c + w/2, w/2);	//1
		draw(s, p, r,       c,       w/2);	//2
		draw(s, p, r + w/2, c,       w/2);	//3
		draw(s, p, r + w/2, c + w/2, w/2);	//4
	} else if(ch == 'f'){
		for(int i = r;i < r+w;i++)
			for(int j = c;j < c+w;j++){
				if(buf[i][j] == 0) { buf[i][j] = 1; cnt++;}
			}
	}
}

int main()
{
	int T;
	scanf("%d",&T);
	while(T--){
		memset(buf,0,sizeof(buf));
		cnt = 0;
		for(int i = 0; i < 2; i++){
			scanf("%s",s);
			int p = 0;
			draw(s,p,0,0,len);
		}
		printf("There are %d black pixels.\n",cnt);
	}
	return 0;
}
